Possible Clues:

• Building secured but lacking roof
• Small building or shelter
• One would not keep open house below the South (3)
• Gilligan's home
• Islander's dwelling
• Where to find the golf course marshal?
• It would not be open to follow the South to be shed like this
• Primitive home made of straw
• Small shed for storing, say, garden tools
• Wickiup, e.g.